Sm11Co89

Sm₁₁Co₈₉ is a rare-earth cobalt intermetallic compound belonging to the SmCo family of permanent magnets, characterized by a samarium-cobalt matrix that forms high-strength magnetic phases. This material is used primarily in high-performance permanent magnet applications where exceptional thermal stability and corrosion resistance are required, particularly in aerospace, military, and extreme-environment systems where conventional neodymium magnets would degrade. SmCo magnets like Sm₁₁Co₈₉ are valued over NdFeB alternatives in applications demanding operation above 150°C, superior coercivity retention at elevated temperatures, and resistance to oxidation without heavy coating requirements.